# This work is licensed under the MIT license.
# Copyright (c) 2013-2023 OpenMV LLC. All rights reserved.
# https://github.com/openmv/openmv/blob/master/LICENSE
#
# QRCode Example
#
# This example shows the power of the OpenMV Cam to detect QR Codes
# without needing lens correction.

import sensor
import time

sensor.reset()
sensor.set_pixformat(sensor.GRAYSCALE)
sensor.set_framesize(sensor.VGA)
sensor.set_windowing((240, 240))  # look at center 240x240 pixels of the VGA resolution.
sensor.skip_frames(time=2000)
sensor.set_auto_gain(False)  # must turn this off to prevent image washout...
clock = time.clock()

while True:
    clock.tick()
    img = sensor.snapshot()
    for code in img.find_qrcodes():
        img.draw_rectangle(code.rect(), color=127)
        print(code)
    print(clock.fps())
